Why is the cmd /c wrapper necessary on Windows?

On Windows systems, running NPX commands directly often leads to 'Connection closed' errors; wrapping the command in 'cmd /c' ensures the proper execution environment for MCP servers.

Does this skill support project-specific configurations?

Yes, it manages both global (~/.claude.json) and project-level (.mcp.json) configurations, where project settings automatically override global ones for the same server.

Can I manage Python-based MCP servers with this skill?

Absolutely. It includes templates and support for Python-m modules, Node.js scripts, and direct execution, in addition to NPX-based tools.

How do I verify if my MCP configuration is valid?

The skill provides a list command to view active servers and includes syntax checking utilities to validate your JSON configuration files before restarting.

MCP Windows Manager

Name: MCP Windows Manager
Author: theflysurfer

bytheflysurfer

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Developer Tools

Configures and manages Model Context Protocol (MCP) servers on Windows with correct command wrappers to prevent connection errors.

About

The MCP Windows Manager skill streamlines the setup and administration of MCP servers for Windows users by automatically implementing the necessary 'cmd /c' wrapper for NPX commands. It provides a robust interface for listing, adding, and removing servers across both global and project-specific configurations, ensuring reliable connectivity between Claude Code and external tools while resolving common 'Connection closed' issues caused by OS-specific execution requirements.

Key Features

Built-in troubleshooting for common connection and syntax errors
Support for both global (~/.claude.json) and project-level (.mcp.json) configurations
Automated 'cmd /c' wrapper injection for Windows compatibility
Standardized implementation patterns for NPX, Python, and Node.js servers
Streamlined commands for listing, adding, and removing MCP servers
1 GitHub stars

Use Cases

Configuring new MCP servers on a Windows development environment
Fixing 'Connection closed' errors when running MCPs via NPX on Windows
Managing project-specific toolsets within a local directory configuration

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add theflysurfer/claude-skills-marketplace julien-mcp-windows-manager

For use in Claude.ai and ChatGPT

Download Skill

GitHub